CN102705706B - Safety interlocking device for gas cylinder - Google Patents
Safety interlocking device for gas cylinder Download PDFInfo
- Publication number
- CN102705706B CN102705706B CN201210171239.6A CN201210171239A CN102705706B CN 102705706 B CN102705706 B CN 102705706B CN 201210171239 A CN201210171239 A CN 201210171239A CN 102705706 B CN102705706 B CN 102705706B
- Authority
- CN
- China
- Prior art keywords
- auxiliary
- normally opened
- opened contact
- auxiliary reclay
- closed
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses a safety interlocking device for a gas cylinder, which belongs to the field of automatic control. The device is characterized in that when the air pressure value of the gas cylinder is zero, a control regulator outputs a high level to a first intermediate relay, the first intermediate relay is closed, a third auxiliary normally open contact of the first intermediate relay is closed, and a door control motor of the gas cylinder acts, so that the switch door of the gas cylinder is safely opened; when the gas cylinder is in work, if the air pressure value of the gas cylinder exceeds the maximal limit value, the control regulator outputs a high level to a third intermediate relay, the third intermediate relay is closed, a second auxiliary normally open contact of the third intermediate relay is closed, an exhaust valve of the gas cylinder is opened, and gas begins to be exhausted; and when the switch door of the gas cylinder is closed completely, a door control switch is closed, a fourth intermediate relay is closed, a first auxiliary normally open contact of the fourth intermediate relay is closed, an air inlet valve is opened, and air begins to enter the gas cylinder, so that under the circumstance that the switch door of the gas cylinder is closed completely, air enters the gas cylinder.
Description
Technical field
The present invention relates to the safety interlock of a kind of safety interlock, particularly a kind of gas tank.
Background technique
At present, gas tank all obtains application widely in different industries, such as shoe-making industry sulfurizing pot used, be mainly the rubber of moulding rubber overshoes, in High Temperature High Pressure, carry out sulfidization molding, to guarantee attractive in appearance wear-resisting the gaining in strength of moulding rubber overshoes, sulfurizing pot is to work under high pressure conditions, so the safety of sulfurizing pot is main especially.
The switch gate of sulfurizing pot originally and pressure are controlled, and observe mechanical pressure gauge completely operate by people, and misoperation easily occurs, there is very large potential safety hazard, sulfurizing pot manufacturer has all carried out upgrading to sulfurizing pot safety interlocking now, but imperfection, the especially detection to sulfurizing pot tank internal pressure, error is larger, during sulfurizing pot release, sulfurizing pot pressure is not unsnatched, and pressure gauge is shown as zero, if can opening door, causes very major injury to operator and equipment.Pressure gauge is shown as zero, if actual tank is 0.15kg/ square centimeter, at this moment, tank Men Shouli is 741kg, is opening the door between disengagement, and door can throw open, and damages tank door and hurts operator.Also have overpressure protection unreliable, it utilizes mechanical spring formula pressure control switch, and it is larger that spring working state is affected by environment, temperature; the control accuracy of pressure control switch is lower; produce sometimes bungle, cause the operation of sulfurizing pot superpressure, make sulfurizing pot receive damage and explode.In addition, there is the situation of misoperation in operator, makes pressure lower than the required working pressure of sulfuration, and sulfuration product does not out meet mass parameter requirement, causes economic loss.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, provide a kind of safety interlock of gas tank, can guarantee the switch gate of safe opening gas tank under zero-pressure.
The technical solution used in the present invention is such: a kind of safety interlock of gas tank, comprise pressure transducer, this pressure transducer is for detection of the atmospheric pressure value in gas tank, it is characterized in that: also comprise regulating and controlling instrument and control switch combination, and this control switch combination comprises the 4th auxiliary reclay (ZJ4), door controlled switch and the first auxiliary reclay (ZJ1), wherein the first end of this door controlled switch connects power supply, and the second end connects the 4th auxiliary reclay (ZJ4): when the complete closure of switch gate of gas tank, this door controlled switch is closed;
This regulating and controlling instrument is for receiving the atmospheric pressure value in the gas tank that this pressure transducer detects, and when gas tank internal air pressure value is null value, output high level is given this first auxiliary reclay (ZJ1);
The 3rd auxiliary normally opened contact (ZJ1-3) of this first auxiliary reclay (ZJ1) is connected with the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4), and the free end of the 3rd auxiliary normally opened contact (ZJ-3) of this first auxiliary reclay (ZJ1) connects the first input/output terminal of the gated motor controller of gas tank, the free end of the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4) connects the second input/output terminal of the gated motor controller of gas tank: when the 3rd auxiliary normally opened contact (ZJ1-3) of this first auxiliary reclay (ZJ1) and the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4) are all closed, gated motor controller is controlled gate motor action, thereby the switch gate of safe opening gas tank under zero-pressure.
When operator need to open the switch gate of gas tank, open outlet valve and discharge the gas in gas tank, if the atmospheric pressure value in gas tank is zero, the first output terminal output high level of regulating and controlling instrument is given this first intermediate relay ZJ 1, this the first intermediate relay ZJ 1 closure, and the 3rd auxiliary normally opened contact ZJ-3 of this first intermediate relay ZJ 1 is closed, and the gated motor of gas tank moves, and opens safely the switch gate of gas tank.
This control switch combination also comprises the 3rd auxiliary reclay (ZJ3), and the first end of the second auxiliary normally opened contact (ZJ3-2) of the 3rd auxiliary reclay (ZJ3) connects power supply, and the second end connects outlet valve.
When gas tank is in working procedure, if the atmospheric pressure value in gas tank exceeds the maximum gas pressure limit value of permission, the second output terminal output high level of regulating and controlling instrument is given the 3rd intermediate relay ZJ 3, the 3rd intermediate relay ZJ 3 closures, and the second auxiliary normally opened contact ZJ3-2 of the 3rd intermediate relay ZJ 3 is closed, the outlet valve of gas tank is opened, and starts Exhaust Gas.
The 3rd auxiliary normally-closed contact (ZJ3-3) of the 3rd auxiliary reclay (ZJ3) connects suction valve by the first auxiliary normally opened contact (ZJ4-1) of the 4th auxiliary reclay (ZJ4).
When the switch gate of gas tank is closed completely, this door controlled switch is closed, and the 4th intermediate relay ZJ 4 closures, the first auxiliary normally opened contact ZJ4-1 of the 4th intermediate relay ZJ 4 is closed, INO, beginning is to air inlet in gas tank, thereby guarantees in the situation that the switch gate of gas tank is closed completely to air inlet in gas tank; In addition,, when the atmospheric pressure value in gas tank exceeds the maximum gas pressure limit value of permission, the 3rd auxiliary normally-closed contact ZJ3-3 of the 3rd intermediate relay ZJ 3 disconnects, the suction valve of gas tank is closed, stop entering gas, thereby assurance gas tank is closed suction valve in exhaust process, stops air inlet.
The safety interlock of this gas tank also comprises zero-pressure tutorial light, and the first end of the second auxiliary normally opened contact (ZJ1-2) of this first auxiliary reclay (ZJ1) connects power supply, and the second end connects this zero-pressure tutorial light.
The tutorial light of having realized thus under gas tank zero-pressure state is reported to the police.
The safety interlock of this gas tank also comprises zero-pressure information ring device, and this control switch combination also comprises first city's electrical relay (SJ1) and the second auxiliary reclay (ZJ2), the first end of the first auxiliary normally opened contact (ZJ1-1) of this first auxiliary reclay (ZJ1) connects power supply, and the second end connects first city's electrical relay (SJ1) and assists normally-closed contact (SJ1-1) to connect this second auxiliary reclay (ZJ2) by first of this first city electrical relay (SJ1);
The first end of the first auxiliary normally opened contact (ZJ2-1) of this second auxiliary reclay (ZJ2) connects power supply, and the second end connects this zero-pressure information ring device.
Realized thus the of short duration sound alarm under gas tank zero-pressure state.
The safety interlock of this gas tank also comprises superpressure information ring device and superpressure tutorial light, the first end of the first auxiliary normally opened contact (ZJ3-1) of the 3rd auxiliary reclay (ZJ3) connects power supply, and the second end connects respectively this superpressure information ring device and superpressure tutorial light.
The tutorial light of having realized thus under gas tank superpressure state is reported to the police and continues sound alarm.
The safety interlock of this gas tank also comprises and closes a tutorial light, and the first end of the 3rd auxiliary normally opened contact of the 4th auxiliary reclay (ZJ4) connects power supply, and the second end connects this and closes a tutorial light.
Having realized thus the switch gate of gas tank tutorial light when closed reports to the police.
The safety interlock of this gas tank also comprises and closes an information ring device, and this control switch combination also comprises second city's electrical relay (SJ2) and the 5th auxiliary reclay (ZJ5), the first end of the second auxiliary normally opened contact (ZJ4-2) of the 4th auxiliary reclay (ZJ4) connects power supply, and the second end connects this second city electrical relay (SJ2) and assists normally-closed contact (SJ2-1) to connect the 5th auxiliary reclay (ZJ5) by first of this second city electrical relay (SJ2);
The first auxiliary normally opened contact (ZJ5-1) of the 5th auxiliary reclay (ZJ5) connects this and closes an information ring device.
Realized thus the switch gate of gas tank of short duration sound alarm when closed.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
The safety interlock of this gas tank can be at the switch gate of safe opening gas tank under zero-pressure, when gas tank superpressure, automatically discharge unnecessary gas, and just start, to gas tank air inlet, to have guaranteed thus the safety of operator and equipment in the situation that the switch gate of gas tank is completely closed.
Accompanying drawing explanation
Fig. 1 is circuit theory diagrams of the present invention;
Fig. 2 is the connection diagram of gated motor in the present invention.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in detail.
In order to make object of the present invention, technological scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
As shown in Figure 1, the safety interlock of this gas tank comprises pressure transducer, regulating and controlling instrument, control switch combination, zero-pressure tutorial light, zero-pressure information ring device, superpressure tutorial light, superpressure information ring device, closes a tutorial light and close an information ring device, and wherein this control switch combination comprises the first intermediate relay ZJ 1, the second intermediate relay ZJ 2, the 3rd intermediate relay ZJ 3, the 4th intermediate relay ZJ 4, the 5th intermediate relay ZJ 5, the first city electrical relay SJ1 and the second city electrical relay SJ2.
The output terminal of this pressure transducer connects regulating and controlling instrument, and the first output terminal of this regulating and controlling instrument connects the first intermediate relay ZJ 1, the first end of the first auxiliary normally opened contact ZJ1-1 of this first intermediate relay ZJ 1 connects power supply, and the second end connects the first city electrical relay SJ1 and assists normally-closed contact SJ1-1 to connect the second intermediate relay ZJ 2 by first of this first city electrical relay SJ1, the first end of the first auxiliary normally opened contact ZJ2-1 of this second intermediate relay ZJ 2 connects power supply, and the second end connects zero-pressure information ring device, the first end of the second auxiliary normally opened contact ZJ1-2 of this first intermediate relay ZJ 1 connects power supply, and the second end connects zero-pressure tutorial light, as shown in Figure 2, the 3rd auxiliary normally opened contact ZJ1-3 of this first intermediate relay ZJ 1 connects with the 3rd auxiliary normally-closed contact ZJ4-3 of the 4th intermediate relay ZJ 4, and the free end of the 3rd auxiliary normally opened contact ZJ1-3 of this first intermediate relay ZJ 1 connects the first input/output terminal of gate electric machine controller, the free end of the 3rd auxiliary normally-closed contact ZJ4-3 of the 4th intermediate relay ZJ 4 connects the second input/output terminal of gate electric machine controller: when the 3rd auxiliary normally opened contact ZJ1-3 closure of this first intermediate relay ZJ 1, gated motor controller is controlled this gated motor action, thereby the switch gate of safe opening gas tank.
The first end that the second output terminal of this regulating and controlling instrument connects the first auxiliary normally opened contact ZJ3-1 of the 3rd intermediate relay ZJ 3, the three intermediate relay ZJ 3 connects power supply, and the second end connects respectively superpressure information ring device, superpressure tutorial light; The second auxiliary normally opened contact ZJ3-2 of the 3rd intermediate relay ZJ 3 connects outlet valve.
The first end of door controlled switch connects power supply, and the second end connects the 4th intermediate relay ZJ 4; The first end of the 3rd auxiliary normally-closed contact ZJ3-3 of the 3rd intermediate relay ZJ 3 connects power supply, and the second end connects suction valve by the first auxiliary normally opened contact ZJ4-1 of the 4th intermediate relay ZJ 4; The second auxiliary normally opened contact ZJ4-2 of the 4th intermediate relay ZJ 4 connects the second city electrical relay SJ2 and assists normally-closed contact SJ2-1 to connect the 5th intermediate relay ZJ 5 by first of this second city electrical relay SJ2; The first end of the first auxiliary normally opened contact ZJ5-1 of the 5th intermediate relay ZJ 5 connects power supply, and an information ring device is closed in the second end connection; The first end of the 3rd auxiliary normally opened contact ZJ4-3 of the 4th intermediate relay ZJ 4 connects power supply, and a tutorial light is closed in the second end connection.
In addition, in the present invention, this pressure transducer is selected pressure transmitter, and the acquisition precision of force value is higher.
Working principle of the present invention is: pressure transducer gathers the atmospheric pressure value in gas tank and this atmospheric pressure value is sent to regulating and controlling instrument.
When operator need to open the switch gate of gas tank, open outlet valve and discharge the gas in gas tank, if the atmospheric pressure value in gas tank is zero, the first output terminal output high level of regulating and controlling instrument is given this first intermediate relay ZJ 1, this the first intermediate relay ZJ 1 closure, and the first auxiliary normally opened contact ZJ1-1 of this first intermediate relay ZJ 1, the second auxiliary normally opened contact ZJ1-2 and the 3rd auxiliary normally opened contact ZJ-3 are closed: when first of the first intermediate relay ZJ 1 assists normally opened contact ZJ1-1 closed, time delay due to the first city electrical relay SJ1, the of short duration closure of this second intermediate relay ZJ 2, and the first auxiliary of short duration closure of normally opened contact ZJ2-1 of this second intermediate relay ZJ 2, this zero-pressure information ring device carries out short time warning, when second of the first intermediate relay ZJ 1 assists normally opened contact ZJ1-2 closed, zero-pressure tutorial light is lighted, when the 3rd of the first intermediate relay ZJ 1 assists normally opened contact ZJ1-3 closed, the gated motor of gas tank moves, and opens safely the switch gate of gas tank.
When the switch gate of gas tank is closed completely, this door controlled switch is closed, and the 4th intermediate relay ZJ 4 closures, the first auxiliary normally opened contact ZJ4-1 of the 4th intermediate relay ZJ 4, the second auxiliary normally opened contact ZJ4-2 and the 3rd auxiliary normally opened contact ZJ4-3 are closed: when first of the 4th intermediate relay ZJ 4 assists normally opened contact ZJ4-1 closed, INO, starts to air inlet in gas tank; When second of the 4th intermediate relay ZJ 4 is assisted normally opened contact ZJ4-2 conducting, time delay due to the second city electrical relay SJ2, the of short duration closure of the 5th intermediate relay ZJ 5, and the first auxiliary of short duration closure of normally opened contact ZJ5-1 of the 5th intermediate relay ZJ 5, this closes an information ring device and carries out short time warning; When the 3rd of the 4th intermediate relay ZJ 4 is assisted normally opened contact ZJ4-3 conducting, this closes a tutorial light and lights.
When gas tank is in working procedure, if the atmospheric pressure value in gas tank exceeds the maximum gas pressure limit value of permission, the second output terminal output high level of regulating and controlling instrument is given the 3rd intermediate relay ZJ 3, the 3rd intermediate relay ZJ 3 closures, and the first auxiliary normally opened contact ZJ3-1, the second auxiliary normally opened contact ZJ3-2 of the 3rd intermediate relay ZJ 3 are all closed: when first of the 3rd intermediate relay ZJ 3 assists normally opened contact ZJ3-1 closed, superpressure information ring device starts to report to the police and superpressure tutorial light is lighted; When second of the 3rd intermediate relay ZJ 3 assists normally opened contact ZJ3-2 closed, the outlet valve of gas tank is opened, and starts Exhaust Gas; In addition, the 3rd auxiliary normally-closed contact ZJ3-3 of the 3rd intermediate relay ZJ 3 disconnects, and the suction valve of gas tank is closed, stops entering gas.
If the atmospheric pressure value in gas tank is less than the maximum gas pressure limit value of permission, the second output terminal output low level of regulating and controlling instrument is given the 3rd intermediate relay ZJ 3, the 3rd intermediate relay ZJ 3 disconnects, and the first auxiliary normally opened contact ZJ3-1, the second auxiliary normally opened contact ZJ3-2 of the 3rd intermediate relay ZJ 3 all disconnect: when first of the 3rd intermediate relay ZJ 3 assists normally opened contact ZJ3-1 closed, superpressure information ring device stop alarm and superpressure tutorial light extinguish; When second of the 3rd intermediate relay ZJ 3 assists normally opened contact ZJ3-2 closed, the outlet valve of gas tank is closed, stops Exhaust Gas; In addition, the 3rd auxiliary normally-closed contact ZJ3-3 of the 3rd intermediate relay ZJ 3 is closed, and the suction valve of gas tank is closed, stops to air inlet in gas tank.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (4)
1. the safety interlock of a gas tank, comprise pressure transducer, this pressure transducer is for detection of the atmospheric pressure value in gas tank, it is characterized in that: also comprise regulating and controlling instrument and control switch combination, and this control switch combination comprises the 4th auxiliary reclay (ZJ4), door controlled switch and the first auxiliary reclay (ZJ1), wherein the first end of this door controlled switch connects power supply, and the second end connects the 4th auxiliary reclay (ZJ4): when the complete closure of switch gate of gas tank, this door controlled switch is closed;
This regulating and controlling instrument is for receiving the atmospheric pressure value in the gas tank that this pressure transducer detects, and when gas tank internal air pressure value is null value, output high level is given this first auxiliary reclay (ZJ1);
The 3rd auxiliary normally opened contact (ZJ1-3) of this first auxiliary reclay (ZJ1) is connected with the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4), and the free end of the 3rd auxiliary normally opened contact (ZJ-3) of this first auxiliary reclay (ZJ1) connects the first input/output terminal of the gated motor controller of gas tank, the free end of the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4) connects the second input/output terminal of the gated motor controller of gas tank: when the 3rd auxiliary normally opened contact (ZJ1-3) of this first auxiliary reclay (ZJ1) and the 3rd auxiliary normally-closed contact (ZJ4-3) of the 4th auxiliary reclay (ZJ4) are all closed, gated motor controller is controlled gate motor action, thereby the switch gate of safe opening gas tank under zero-pressure,
While opening the switch gate of gas tank, open outlet valve and discharge the gas in gas tank, if the atmospheric pressure value in gas tank is zero, the first output terminal output high level of regulating and controlling instrument is given this first auxiliary reclay (ZJ1), this the first auxiliary reclay (ZJ1) closure, and the first auxiliary normally opened contact (ZJ1-1) of this first auxiliary reclay (ZJ1), the second auxiliary normally opened contact (ZJ1-2) and the 3rd auxiliary normally opened contact (ZJ-3) closure: when first of the first auxiliary reclay (ZJ1) assists normally opened contact (ZJ1-1) closed, time delay due to first city's electrical relay (SJ1), the of short duration closure of the second intermediate relay ZJ 2, and the first auxiliary of short duration closure of normally opened contact (ZJ2-1) of this second auxiliary reclay (ZJ2), zero-pressure information ring device carries out short time warning, when second of the first auxiliary reclay (ZJ1) assists normally opened contact (ZJ1-2) closed, zero-pressure tutorial light is lighted, when the 3rd of the first auxiliary reclay (ZJ1) assists normally opened contact (ZJ1-3) closed, the gated motor of gas tank moves, and opens safely the switch gate of gas tank,
When the switch gate of gas tank is closed completely, this door controlled switch is closed, and the 4th auxiliary reclay (ZJ4) closure, the first auxiliary normally opened contact (ZJ4-1) of the 4th auxiliary reclay (ZJ4), the second auxiliary normally opened contact (ZJ4-2) and the 3rd auxiliary normally opened contact (ZJ4-3) closure: when first of the 4th auxiliary reclay (ZJ4) assists normally opened contact (ZJ4-1) closed, INO, starts to air inlet in gas tank; When second of the 4th auxiliary reclay (ZJ4) is assisted normally opened contact (ZJ4-2) conducting, time delay due to second city's electrical relay (SJ2), the of short duration closure of the 5th auxiliary reclay (ZJ5), and the first auxiliary of short duration closure of normally opened contact (ZJ5-1) of the 5th intermediate relay ZJ 5, closes an information ring device and carries out short time warning; When the 3rd of the 4th auxiliary reclay (ZJ4) is assisted normally opened contact (ZJ4-3) conducting, close a tutorial light and light;
This control switch combination also comprises the 3rd auxiliary reclay (ZJ1), and the first end of the second auxiliary normally opened contact (ZJ1-1) of the 3rd auxiliary reclay (ZJ1) connects power supply, and the second end connects outlet valve;
The 3rd auxiliary normally-closed contact (ZJ3-3) of the 3rd auxiliary reclay (ZJ3) connects suction valve by the first auxiliary normally opened contact (ZJ4-1) of the 4th auxiliary reclay (ZJ4);
Also comprise zero-pressure tutorial light, the first end of the second auxiliary normally opened contact (ZJ1-2) of this first auxiliary reclay (ZJ1) connects power supply, and the second end connects this zero-pressure tutorial light;
Also comprise zero-pressure information ring device, and this control switch combination also comprises first city's electrical relay (SJ1) and the second auxiliary reclay (ZJ2), the first end of the first auxiliary normally opened contact (ZJ1-1) of this first auxiliary reclay (ZJ1) connects power supply, and the second end connects first city's electrical relay (SJ1) and assists normally-closed contact (SJ1-1) to connect this second auxiliary reclay (ZJ2) by first of this first city electrical relay (SJ1);
The first end of the first auxiliary normally opened contact (ZJ2-1) of this second auxiliary reclay (ZJ2) connects power supply, and the second end connects this zero-pressure information ring device.
2. the safety interlock of gas tank according to claim 1, it is characterized in that: also comprise superpressure information ring device and superpressure tutorial light, the first end of the first auxiliary normally opened contact (ZJ3-1) of the 3rd auxiliary reclay (ZJ3) connects power supply, and the second end connects respectively this superpressure information ring device and superpressure tutorial light.
3. the safety interlock of gas tank according to claim 2, is characterized in that: also comprise and close a tutorial light, the first end of the 3rd auxiliary normally opened contact of the 4th auxiliary reclay (ZJ4) connects power supply, and the second end connects this and closes a tutorial light.
4. the safety interlock of gas tank according to claim 1 and 2, it is characterized in that: also comprise and close an information ring device, and this control switch combination also comprises second city's electrical relay (SJ2) and the 5th auxiliary reclay (ZJ5), the first end of the second auxiliary normally opened contact (ZJ4-2) of the 4th auxiliary reclay (ZJ4) connects power supply, and the second end connects this second city electrical relay (SJ2) and assists normally-closed contact (SJ2-1) to connect the 5th auxiliary reclay (ZJ5) by first of this second city electrical relay (SJ2);
The first auxiliary normally opened contact (ZJ5-1) of the 5th auxiliary reclay (ZJ5) connects this and closes an information ring device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210171239.6A CN102705706B (en) | 2012-05-29 | 2012-05-29 | Safety interlocking device for gas cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210171239.6A CN102705706B (en) | 2012-05-29 | 2012-05-29 | Safety interlocking device for gas cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102705706A CN102705706A (en) | 2012-10-03 |
| CN102705706B true CN102705706B (en) | 2014-03-19 |
Family
ID=46898681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210171239.6A Active CN102705706B (en) | 2012-05-29 | 2012-05-29 | Safety interlocking device for gas cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102705706B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188407A (en) * | 1986-03-26 | 1987-09-30 | Fang Ruey Feng | Gas flow control apparatus |
| DE3700726A1 (en) * | 1987-01-13 | 1988-07-28 | Gok Gmbh & Co Kg | Thermally triggered shut-off device |
| CN2112489U (en) * | 1992-02-21 | 1992-08-12 | 广东省湛江机械厂 | Safety linkage system for sulfidation tank |
| FR2686679A1 (en) * | 1992-01-28 | 1993-07-30 | Reglage Thermique Ste Alsacien | Safety device protecting against excess pressures of a fluid confined in an enclosure |
| CN2241914Y (en) * | 1995-10-24 | 1996-12-04 | 李胜男 | Cable gas-filling device without reservoir |
| CN2414902Y (en) * | 2000-01-28 | 2001-01-17 | 河南省科学院应用物理研究所 | Rubber V-belt vulcanizing tank controlling device |
| CN200957644Y (en) * | 2006-04-20 | 2007-10-10 | 青岛国人橡胶研究院有限公司 | Safety interlocker of vulcanizer |
| CN201745119U (en) * | 2010-08-20 | 2011-02-16 | 酒泉荣泰橡胶制品有限公司 | Rubber vulcanizing tank safe interlocking device |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6391451A (en) * | 1986-10-02 | 1988-04-22 | Hitachi Plant Eng & Constr Co Ltd | Safety device of air conditioning apparatus |
| JPWO2006062030A1 (en) * | 2004-12-10 | 2008-06-05 | 東京電力株式会社 | Apparatus and method for controlling internal pressure of airtight structure |
-
2012
- 2012-05-29 CN CN201210171239.6A patent/CN102705706B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2188407A (en) * | 1986-03-26 | 1987-09-30 | Fang Ruey Feng | Gas flow control apparatus |
| DE3700726A1 (en) * | 1987-01-13 | 1988-07-28 | Gok Gmbh & Co Kg | Thermally triggered shut-off device |
| FR2686679A1 (en) * | 1992-01-28 | 1993-07-30 | Reglage Thermique Ste Alsacien | Safety device protecting against excess pressures of a fluid confined in an enclosure |
| CN2112489U (en) * | 1992-02-21 | 1992-08-12 | 广东省湛江机械厂 | Safety linkage system for sulfidation tank |
| CN2241914Y (en) * | 1995-10-24 | 1996-12-04 | 李胜男 | Cable gas-filling device without reservoir |
| CN2414902Y (en) * | 2000-01-28 | 2001-01-17 | 河南省科学院应用物理研究所 | Rubber V-belt vulcanizing tank controlling device |
| CN200957644Y (en) * | 2006-04-20 | 2007-10-10 | 青岛国人橡胶研究院有限公司 | Safety interlocker of vulcanizer |
| CN201745119U (en) * | 2010-08-20 | 2011-02-16 | 酒泉荣泰橡胶制品有限公司 | Rubber vulcanizing tank safe interlocking device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102705706A (en) | 2012-10-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102705706B (en) | Safety interlocking device for gas cylinder | |
| CN202240688U (en) | Automatic switching device of safety protective door of machine tool equipment | |
| CN104775983B (en) | Pump-storage generator stator time-delay closing system | |
| CN107797502A (en) | Pressure tank truck is remotely controlled emergency shutoff device | |
| CN109011316A (en) | Fire-fighting emergency leakage blocking simulated training control system with pressure | |
| CN102721541A (en) | Testing device and testing method for closing time of steam extraction check valve of steam turbine | |
| CN203879722U (en) | Automatic control device of air compressors | |
| CN204476071U (en) | Passenger vehicle ecp door anti-clipping system | |
| CN204512600U (en) | With the duplex air solenoid directional control valve of measuring ability | |
| CN203217397U (en) | Temperature measurement controller for relay protection cabinet | |
| CN203283091U (en) | Self-unloading system of powder material transportation vehicle | |
| CN105529212A (en) | Oil tank pressure relay protection device and protection method for transformer | |
| CN203925608U (en) | Quick-break valve driving circuit of small steam turbine | |
| CN203577189U (en) | Fire extinguishing system and excavator comprising same | |
| CN207319024U (en) | The urgent remote-control cut-off device of pressure tank truck | |
| CN202403875U (en) | Automatic interlocking device for pressure control in pressure-resistant test for pressure container | |
| CN205943930U (en) | Transformer is buchholz relay self -bleeding device for on -load tap -changer | |
| CN207050487U (en) | A kind of tube furnace entrance coal gas fast cut valve protection device | |
| CN219140023U (en) | Alarm device for preventing valve body from misoperation | |
| CN205876511U (en) | Emergent power supply control device of marine engine | |
| CN102444781A (en) | Constant-force gas bottle closing system | |
| CN105587923B (en) | Vehicle and its valve emergency cut-off system | |
| CN206458450U (en) | Well group condensate oil discharging device | |
| CN204799281U (en) | Take chamber door induction system's warm humid test case | |
| CN204922522U (en) | Prevent leaking support system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |